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Rewind le pointeur intérieur du tableau à un
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Français
Sortie les valeurs de l'élément actuel, de l'élément suivant et de l'élément précédent dans le tableau:
<span class="token php language-php"><span class="token delimiter important"><? Php</span> <span class="token variable">$ People</span> <span class="token operator">=</span> <span class="token keyword">Array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Bill"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Steve"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Mark"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"David"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token keyword">Echo</span> <span class="token function">Current</span> <span class="token punctuation">(</span> <span class="token variable">$ People</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token keyword">Echo</span> <span class="token function">Suivant</span> <span class="token punctuation">(</span> <span class="token variable">$ People</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token keyword">écho</span><span class="token function"></span></span><mark> <span class="token function">prev</span> <span class="token punctuation">(</span> <span class="token variable">$ les gens</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token punctuation">;</span> <span class="token delimiter important">?></span>
Démontrer toutes les méthodes connexes:
<span class="token php language-php"><span class="token delimiter important"><? Php</span> <span class="token variable">$ People</span> <span class="token operator">=</span> <span class="token keyword">Array</span> <span class="token punctuation">(</span> <span class="token string double-quoted-string">"Bill"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Steve"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"Mark"</span> <span class="token punctuation">,</span> <span class="token string double-quoted-string">"David"</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token keyword">Echo</span> <span class="token function">Current</span> <span class="token punctuation">(</span> <span class="token variable">$ People</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// L'élément actuel est la facture</span> <span class="token keyword">Echo</span> <span class="token function">Suivant</span> <span class="token punctuation">(</span> <span class="token variable">$ People</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// Le prochain élément de Bill est Steve</span> <span class="token keyword">Echo</span> <span class="token function">Current</span> <span class="token punctuation">(</span> <span class="token variable">$ People</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// L'élément actuel est Steve maintenant</span> <span class="token keyword">écho</span><span class="token function"></span></span><mark> <span class="token function">prev</span> <span class="token punctuation">(</span> <span class="token variable">$ les gens</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// L'élément précédent de Steve est Bill</span> <span class="token keyword">Echo</span> <span class="token function">End</span> <span class="token punctuation">(</span> <span class="token variable">$ les gens</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// Le dernier élément est David</span> <span class="token keyword">écho</span><span class="token function"></span><mark> <span class="token function">prev</span> <span class="token punctuation">(</span> <span class="token variable">$ les gens</span> <span class="token punctuation">)</span></mark><span class="token punctuation"></span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// L'élément avant David est Mark</span> <span class="token keyword">Echo</span> <span class="token function">Current</span> <span class="token punctuation">(</span> <span class="token variable">$ People</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// L'élément actuel actuel est Mark</span> <span class="token function">Réinitialisation</span> <span class="token keyword">de l'écho</span> <span class="token punctuation">(</span> <span class="token variable">$ les gens</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// déplace le pointeur interne vers le premier élément du tableau, c'est-à-dire le projet de loi</span> <span class="token keyword">Echo</span> <span class="token function">Suivant</span> <span class="token punctuation">(</span> <span class="token variable">$ People</span> <span class="token punctuation">)</span> <span class="token operator">.</span> <span class="token string double-quoted-string">"<br>"</span> <span class="token punctuation">;</span> <span class="token comment">// Le prochain élément de Bill est Steve</span> <span class="token function">print_r</span> <span class="token punctuation">(</span> <span class="token function">chacun</span> <span class="token punctuation">(</span> <span class="token variable">$ peuple</span> <span class="token punctuation">)</span> <span class="token punctuation">)</span> <span class="token punctuation">;</span> <span class="token comment">// renvoie le nom de la clé et la valeur clé de l'élément actuel (actuellement Steve) et déplace le pointeur interne vers l'avant</span> <span class="token delimiter important">?></span>
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